A 144 car Northtown, MN to Dore, ND manifest makes a bit less than track speed up the .6% grade over the Gassman Coulee Trestle behind two of GE's finest Evolution's. The train, which consists of fracking sand loads, empty tanks for oil, propane, and butane, and a healthy cut of empty grain hoppers on the rear was making single digit speeds in the eighth notch... The sound was phenomenal.